cncopscheduler - cncop scheduler
cncopscheduler - cncop scheduler#
cncopscheduler is responsible for orchestrating the execution of
periodic tasks and scheduled backup jobs. Schedules are specified using an
enhanced cron syntax. The enhanced
syntax supports an optional sixth field for seconds (see
cncopscheduler provides an interactive tcp services to administrators
via the loopback interface. This interactive service can be used to query the
status of jobs and examine upcoming schedules. It also supports on-demand backup
There are several periodic tasks required of all systems that particpate
perform backups, so called cncop devices. There are a few additional tasks
required by cncop devices with the designated role of REMOTE (e.g.
The tasks common to all cncop devices are
Periodically download updated jobs from cncop network.
Submit device changes to the cncop network.
cncopregistration have their scheduled
start-times randomized to spread out the number of simultaneous requests
submitted to the cncop network. The randomization is calculated by
cncopscheduler when it starts, but once selected, it stays in effect
until the module is restarted.
Those tasks reserved to REMOTE devices are
Healthy server maintenance tasks
Virus scan healthy server backups
6am & 6pm
Interactive tcp sessions#
cncopscheduler listens on the loopback interface of the device for tcp
requests submitted to a pre-arranged tcp port. The tcp port defaults to 59153.
User’s can initiate an interactive session using telnet(1), e.g.,
telnet localhost 59153.
The interactive session provides several commands an administrator can use to query the status of the backup jobs, check on their schedules and request an on-demand backup job.
Commands are case insensitive, and with the exception of the SHUTDOWN command, each command can be abbreviated to it’s unique prefix. The full command list is
Cause the execution of one or more jobs. Requires an additional parameter that specifies which job(s) to run. The parameter can be either a jobtitle, a jobid or -a to run all jobs. Multiple jobs can be run by space separing parameters.
cncopschedulerwill respond with a formatted display of when tasks and jobs will run next.
cncopschedulerwill respond with a list of those tasks or jobs that are currently running.
Causes the device to invoke
cncopgetprofileand afterwards to refresh it’s running job schedules.
Causes the device to invoke
cncopgetprofileand afterwards resynchronize it’s cncop assigned role and then refresh it’s running job schedules.
This will cause
cncopschedulerto shut down all running tasks and jobs and unload itself. No further tasks or jobs will be run until the program is restarted. To remove ambiguity this command may not be abbreviated.
Close the tcp session
Display a help summary.
Override tcp sessions port#
An administrator can override the default tcp port by changing the
scheduler_port setting in the [defaults] section of the
Config/cncop3.ini file. Changes will be read on the next restart of